泸州地区深层五峰‒龙马溪组页岩气储层全孔径表征及其主控因素

石学文; 吴伟; 胡海燕; 刘立航; 朱逸青; 潘仁芳; 孟江辉; 王涛

doi:10.3799/dqkx.2022.457

Volume 48 Issue 1

Jan. 2023

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Article Navigation > Earth Science > 2023 > 48(1): 158-172

Shi Xuewen, Wu Wei, Hu Haiyan, Liu Lihang, Zhu Yiqing, Pan Renfang, Meng Jianghui, Wang Tao, 2023. The Whole Apertures of Deeply Buried Wufeng-Longmaxi Formation Shale and Their Controlling Factors in Luzhou District, Sichuan Basin. Earth Science, 48(1): 158-172. doi: 10.3799/dqkx.2022.457

Citation:

Shi Xuewen, Wu Wei, Hu Haiyan, Liu Lihang, Zhu Yiqing, Pan Renfang, Meng Jianghui, Wang Tao, 2023. The Whole Apertures of Deeply Buried Wufeng-Longmaxi Formation Shale and Their Controlling Factors in Luzhou District, Sichuan Basin. Earth Science, 48(1): 158-172. doi: 10.3799/dqkx.2022.457

Citation:

Shi Xuewen, Wu Wei, Hu Haiyan, Liu Lihang, Zhu Yiqing, Pan Renfang, Meng Jianghui, Wang Tao, 2023. The Whole Apertures of Deeply Buried Wufeng-Longmaxi Formation Shale and Their Controlling Factors in Luzhou District, Sichuan Basin. Earth Science, 48(1): 158-172. doi: 10.3799/dqkx.2022.457

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The Whole Apertures of Deeply Buried Wufeng-Longmaxi Formation Shale and Their Controlling Factors in Luzhou District, Sichuan Basin

doi: 10.3799/dqkx.2022.457

Shi Xuewen^{1
,
,},
Wu Wei¹,
Hu Haiyan^{2, 3
,
,
,},
Liu Lihang⁴,
Zhu Yiqing¹,
Pan Renfang³,
Meng Jianghui³,
Wang Tao³

1.
Shale Gas Institute, PetroChina Southwest Oil & Gasﬁeld Company, Chengdu 610051, China
2.
School of Resources and Environment, Yangtze University, Wuhan 430100, China
3.
Hubei Key Laboratory of Petroleum Geochemistry and Environment, Yangtze University, Wuhan 430100, China
4.
11th Oil Production Plant, PetroChina Changqing Oilfield Company, Qingyang 745000, China

Received Date: 2022-07-26
Available Online: 2023-02-01
Publish Date: 2023-01-25

Abstract

Abstract

Pore distribution of shale is a key parameter of the shale reservoir, and it is important to estimate shale gas resource reserve and for shale gas exploration and development. To characterize the pore apertures of deeply buried Wufeng-Longmaxi shale in the Luzhou district, carbon dioxide and nitrogen adsorption, high pressure mercury injection and helium expansion porosity were used, combined with the oxidation-reduction condition during the deposition, moisture and TOC. The data show that mesopores were main pore types, accounting for 73% of the total pore volume on average, followed by micropores of 23%, and macropores of 4%. Pore volume changed regularly with the deposited oxidation-reduction environment, and the TOC contents dominantly controlled the pore distributions and pore volumes, especially obvious for pores of less than 10 nm in diameter. Moisture could occupy some pores, and reduce the pore surface area and pore volume, with decrease amounting to 30%. Therefore, pore distributions were jointly controlled by oxidation-reduction condition, TOC and moisture.
- Wufeng-,
- Longmaxi Formation,
- deeply burial shale gas,
- pore aperture,
- Sichuan Basin,
- petroleum geology

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References(71)

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The Whole Apertures of Deeply Buried Wufeng-Longmaxi Formation Shale and Their Controlling Factors in Luzhou District, Sichuan Basin

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